Made in Germany, Schmincke's Norma Professional Oil Colors are environmentally friendly in both their formulation and production. The environmentally friendly formulation of Norma Oils includes the use of many naturally renewable raw materials. Combinations of pure, high-quality plant oils produce good adhesion, optimum absorption of the pigment, and less tendency to yellow. The best of both traditional and modern pigments are used in the highest possible concentrations, guaranteeing the maximum efficiency and an extraordinary degree of luminosity and brilliance. A patient manufacturing process that includes grinding with a traditional three-cylinder mill, followed by a three-month maturation period before packaging, guarantees the optimum development of the raw materials within the pure oil paints. All Norma colors display a balanced, creamy, buttery consistency, producing the optimum texture when mixed together. Optimization of the formulation also ensures that the drying process is shortened and is even for all colors - guaranteeing a brilliant, resistant surface. Norma Professional Oils can be combined with Schmincke Mussini colors and other oil paints. This Light Wooden Box Set features ten 20 ml. tubes of color including Titanium White,Lemon Yellow, Cadmium Red, Ultramarine Blue Light, Prussian Blue, Chromium Oxide Green Brilliant, Raw Light Ochre, Burnt Umber and Ivory Black. Also included in one 60 ml. odorless thinner, two brushes, one palette cup and drawing charcoal.